Correcting device for high-frequency welded pipe

Abstract

The utility model discloses a correcting device for a high-frequency welded pipe, which relates to the technical field of correcting devices for high-frequency welded pipes and comprises a bottom plate, a correcting mechanism fixedly connected to the middle of the top end of the bottom plate, a fixing frame fixedly connected to the left side of the top end of the bottom plate, and a second sleeve fixedly connected to the middle of the fixing frame. Openings are formed in the upper end and the lower end of the middle of the second sleeve, second motors are arranged on the upper side and the lower side of the second sleeve, the output ends of the second motors are fixedly connected with mounting shafts, friction wheels are fixedly connected to the middles of the mounting shafts, and one sides of the friction wheels are arranged in the openings. The welded pipe enters a second sleeve in the fixing frame after coming out of the correcting mechanism, an upper friction wheel and a lower friction wheel are tightly attached to the outer wall of the welded pipe, a second motor works to drive a mounting shaft to rotate, the welded pipe is pulled out of the correcting mechanism through friction force between the friction wheels and the outer wall of the welded pipe, the whole long welded pipe can be corrected, repeated fixing is not needed, and the correcting efficiency is improved. The use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency welded pipe correction devices, and specifically relates to a correction device for high-frequency welded pipes. Background Technique

[0002] Welded steel pipes, also known as welded tubes, are steel pipes made by welding steel plates or strips after being coiled and formed. The production process of welded steel pipes is simple, with high production efficiency, a variety of product specifications, and less equipment investment, but generally their strength is lower than that of seamless steel pipes. High-frequency welded pipes are produced by using the skin effect and proximity effect of high-frequency current to heat and melt the edges of the tube billet after the hot-rolled coil sheet is formed by a forming machine, and then performing pressure welding under the action of extrusion rolls. The characteristics of high-frequency welded pipes are: high welding speed, small heat-affected zone of welding, weldable thin-walled pipes, and weldable metal pipes.

[0003] A Chinese patent (publication number: CN217990482U) discloses a correction device for high-frequency welded pipes, including a main body housing. A correction mechanism is arranged inside the main body housing, and a fixing mechanism is arranged at the bottom of the correction mechanism. The correction mechanism includes a first fixing ring, which is fixedly connected to the top inside the main body housing. The inner ring of the first fixing ring is fixedly connected to a limiting sleeve, and the front and rear sides inside the main body housing are fixedly connected with a first fixing rotating shaft. For this high-frequency welded pipe correction device, through the arranged correction mechanism, the high-frequency welded pipe moves downward through a threaded sleeve and contacts the outer circles of the first correction roller and the second correction roller, so as to perform dead-angle-free correction on the front, rear, left, and right four sides of the outer circle of the high-frequency welded pipe, improving the quality of the high-frequency welded pipe after correction. At the same time, compared with the existing high-frequency welded pipe correction machines, this device is more miniaturized in volume, facilitating the staff to carry and use it. However, the working length of this device is limited by the limiting slide rod. When the length of the welded pipe is much greater than the length of the limiting slide rod, the welded pipe needs to be fixed multiple times, which is troublesome to use.

[0004] In order to solve the above problems, we made improvements and proposed a correction device for high-frequency welded pipes. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a correction device for high-frequency welded pipes, including a bottom plate. The middle part of the top of the bottom plate is fixedly connected with a correction mechanism. The left side of the top of the bottom plate is fixedly connected with a fixing frame. The middle part of the fixing frame is fixedly connected with a second sleeve. Openings are provided at both the upper and lower ends of the middle part of the second sleeve. Second motors are arranged on both the upper and lower sides of the second sleeve. The output end of the second motor is fixedly connected with a mounting shaft. The middle part of the mounting shaft is fixedly connected with a friction wheel, and one side of the friction wheel is arranged inside the opening.

[0007] As a preferred technical solution of the present utility model, the correction mechanism includes a frame, and the frame is fixedly connected to the middle of the top end of the bottom plate. A first correction roller group and a second correction roller group are rotatably connected inside the frame, and the second correction roller group is arranged on the left side of the first correction roller group. First sleeves are fixedly connected to both the left and right ends of the frame, and the two first sleeves and the second sleeve are on the same axis.

[0008] As a preferred technical solution of the present utility model, a pair of mounting brackets are fixedly connected to the top end of the bottom plate. The pair of mounting brackets are arranged inside the fixed bracket. A first motor is fixedly installed at the top end of the mounting bracket. The output end of the first motor is fixedly connected to a bidirectional threaded rod. A pair of sliders are threadedly connected to the outer side of the bidirectional threaded rod. The two sliders at the same height are respectively connected to the second motor and the mounting shaft.

[0009] As a preferred technical solution of the present utility model, a roller conveyor is fixedly installed on the right side of the top end of the bottom plate, and the top end of the roller conveyor is flush with the first sleeve.

[0010] As a preferred technical solution of the present utility model, an arc-shaped plate is arranged inside the roller conveyor, and the arc-shaped plate is fixedly connected to the top end of the bottom plate.

[0011] As a preferred technical solution of the present utility model, connection blocks are fixedly connected to both the left and right sides of the mounting bracket, and the connection blocks are fixedly connected to the fixed bracket.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, after the welded pipe comes out of the correction mechanism, it enters the second sleeve inside the fixed bracket, and the upper and lower friction wheels are closely attached to the outer wall of the welded pipe. The second motor works to drive the mounting shaft to rotate, and the welded pipe is drawn out of the correction mechanism through the friction force between the friction wheels and the outer wall of the welded pipe, so that the entire long welded pipe can be corrected without multiple fixings, which is more convenient to use.

[0014] 2. In the present utility model, the first motor works to drive the bidirectional threaded rod to rotate. The rotating bidirectional threaded rod drives the sliders to move through the threads. The upper and lower groups of sliders move towards each other, so that the friction wheels are attached to the outer wall of the welded pipe, enabling the friction wheels to be in full contact with the welded pipe and avoiding slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is the left-side perspective view of the present utility model;

[0017] Figure 2 is the right-side perspective view of the present utility model;

[0018] Figure 3 is the schematic view of the fixing bracket of the present utility model;

[0019] In the figure: 1, bottom plate; 2, frame; 3, fixing bracket; 4, roller conveyor; 5, arc plate; 6, first sleeve; 7, first straightening roller group; 8, second straightening roller group; 9, second sleeve; 10, opening; 11, mounting bracket; 12, first motor; 13, bidirectional threaded rod; 14, slider; 15, second motor; 16, friction wheel; 17, mounting shaft; 18, connecting block. Specific embodiments

[0020] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0021] Embodiment: As Figures 1-3 shown, a straightening device for high-frequency welded pipes includes a bottom plate 1. The middle part of the top end of the bottom plate 1 is fixedly connected with a straightening mechanism. The left side of the top end of the bottom plate 1 is fixedly connected with a fixing bracket 3. The middle part of the fixing bracket 3 is fixedly connected with a second sleeve 9. Both the upper and lower ends of the middle part of the second sleeve 9 are provided with openings 10. Second motors 15 are arranged on both the upper and lower sides of the second sleeve 9. The output end of the second motor 15 is fixedly connected with a mounting shaft 17. The middle part of the mounting shaft 17 is fixedly connected with a friction wheel 16. And one side of the friction wheel 16 is arranged inside the opening 10. The circumferential surface of the friction wheel 16 is provided with an arc-shaped notch;

[0022] After the welded pipe comes out of the straightening mechanism, it enters the second sleeve 9 inside the fixing bracket 3. And the upper and lower two friction wheels 16 are in close contact with the outer wall of the welded pipe. The second motor 15 works to drive the mounting shaft 17 to rotate. The welded pipe is drawn out of the straightening mechanism through the friction between the friction wheel 16 and the outer wall of the welded pipe. The whole long welded pipe can be straightened without multiple fixings, which is more convenient to use.

[0023] Specifically, as Figure 1 and Figure 2 shown, the straightening mechanism includes a frame 2. And the frame 2 is fixedly connected to the middle part of the top end of the bottom plate 1. The first straightening roller group 7 and the second straightening roller group 8 are rotatably connected inside the frame 2. And the second straightening roller group 8 is arranged on the left side of the first straightening roller group 7. Both the left and right ends of the frame 2 are fixedly connected with first sleeves 6. The two first sleeves 6 and the second sleeve 9 are on the same axis. The welded pipe is inserted into the straightening mechanism from the first sleeve 6 on the right side, passes through the first straightening roller group 7 and the second straightening roller group 8 in sequence, then comes out from the first sleeve 6 on the left side, and finally is inserted into the second sleeve 9.

[0024] Specifically, as Figure 1 and Figure 3 shown, a pair of mounting brackets 11 are fixedly connected to the top end of the bottom plate 1. Connecting blocks 18 are fixedly connected to both the left and right sides of the mounting brackets 11, and the connecting blocks 18 are fixedly connected to the fixed frame 3. The pair of mounting brackets 11 are arranged inside the fixed frame 3. A first motor 12 is fixedly installed at the top end of the mounting bracket 11. The output end of the first motor 12 is fixedly connected to a bidirectional threaded rod 13. A pair of sliders 14 are threadedly connected to the outer side of the bidirectional threaded rod 13. Two sliders 14 at the same height are respectively connected to a second motor 15 and a mounting shaft 17. The second motor 15 is fixedly connected to the slider 14, and the mounting shaft 17 is rotatably connected to the slider 14. When the first motor 12 works, it drives the bidirectional threaded rod 13 to rotate. The rotating bidirectional threaded rod 13 drives the sliders 14 to move through the threads. The upper and lower groups of sliders 14 move towards each other, so that the friction wheels 16 are attached to the outer wall of the welded pipe, enabling the friction wheels 16 to be in full contact with the welded pipe and preventing slipping.

[0025] Specifically, as Figure 1 shown, a roller conveyor 4 is fixedly installed on the right side of the top end of the bottom plate 1, and the top end of the roller conveyor 4 is flush with the first sleeve 6. An arc-shaped plate 5 is arranged inside the roller conveyor 4, and the arc-shaped plate 5 is fixedly connected to the top end of the bottom plate 1. The welded pipe moves on the roller conveyor 4 and is restricted by the arc-shaped plate 5, enabling the welded pipe to directly enter the first sleeve 6, thereby improving work efficiency.

[0026] Working principle: The welded pipe moves on the roller conveyor 4 and is restricted by the arc-shaped plate 5, enabling the welded pipe to directly enter the first sleeve 6. The welded pipe is inserted into the straightening mechanism from the first sleeve 6 on the right side, passes through the first straightening roller set 7 and the second straightening roller set 8 in sequence, then comes out from the first sleeve 6 on the left side, and finally is inserted into the second sleeve 9. When the first motor 12 works, it drives the bidirectional threaded rod 13 to rotate. The rotating bidirectional threaded rod 13 drives the sliders 14 to move through the threads. The upper and lower groups of sliders 14 move towards each other, so that the friction wheels 16 are attached to the outer wall of the welded pipe. When the second motor 15 works, it drives the mounting shaft 17 to rotate, and the welded pipe is drawn out of the straightening mechanism through the friction between the friction wheels 16 and the outer wall of the welded pipe, and the welded pipe is straightened.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A straightening device for high-frequency welded pipes, comprising a bottom plate (1), characterized in that, A correction mechanism is fixedly connected to the middle of the top end of the bottom plate (1). A fixing frame (3) is fixedly connected to the left side of the top end of the bottom plate (1). A second sleeve (9) is fixedly connected to the middle of the fixing frame (3). Openings (10) are formed at both the upper and lower ends of the middle of the second sleeve (9). Second motors (15) are arranged on both the upper and lower sides of the second sleeve (9). The output end of the second motor (15) is fixedly connected to a mounting shaft (17). A friction wheel (16) is fixedly connected to the middle of the mounting shaft (17), and one side of the friction wheel (16) is arranged inside the opening (10).

2. The straightening device for high-frequency welded pipes according to claim 1, characterized in that, The correction mechanism includes a frame (2), and the frame (2) is fixedly connected to the middle of the top end of the bottom plate (1). A first correction roller set (7) and a second correction roller set (8) are rotatably connected inside the frame (2), and the second correction roller set (8) is arranged on the left side of the first correction roller set (7). First sleeves (6) are fixedly connected to both the left and right ends of the frame (2). The two first sleeves (6) and the second sleeve (9) are on the same axis.

3. The correction device for high-frequency welded pipes according to claim 1, characterized in that, A pair of mounting frames (11) are fixedly connected to the top end of the bottom plate (1). The pair of mounting frames (11) are arranged inside the fixing frame (3). A first motor (12) is fixedly installed at the top end of the mounting frame (11). The output end of the first motor (12) is fixedly connected to a bidirectional threaded rod (13). A pair of sliders (14) are threadedly connected to the outside of the bidirectional threaded rod (13). The two sliders (14) at the same height are respectively connected to the second motor (15) and the mounting shaft (17).

4. The straightening device for high-frequency welded pipes according to claim 1, characterized in that, A roller conveyor (4) is fixedly installed on the right side of the top end of the bottom plate (1), and the top end of the roller conveyor (4) is flush with the first sleeve (6).

5. The correction device for high-frequency welded pipes according to claim 4, wherein, An arc-shaped plate (5) is arranged inside the roller conveyor (4), and the arc-shaped plate (5) is fixedly connected to the top end of the bottom plate (1).

6. The straightening device for high-frequency welded pipes according to claim 3, characterized in that, Connecting blocks (18) are fixedly connected to both the left and right sides of the mounting frame (11), and the connecting blocks (18) are fixedly connected to the fixing frame (3).

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